Thoughts on treating ich in display tank with Cupramine

Why not treat with hyposalinity again? Really, you treated for the absolute minimum amount of time. 6 weeks (and up to 8) is more accurate in terms of the length of time needed. Basically, this allows for total treatment and allows the tank to go fallow long enough to keep ich from recurring. In the end, it will be a gentler treatment if you really feel you must treat the display. Besides, you'd have to remove all substrate and rock if you wanted to treat with cupramine. In the future, you really must consider quarantining all new arrivals before adding them to your display.

It will kill LS and LR, as will the Cupramine. Beyond that, anything made of calcium carbonate (LR and LS) will absorb the copper from solution. It would be preferable to treat all the fish in quarantine, but a 75 is too small for that many fish, which doesn't leave you with too many options. It may be necessary to treat the tank at this point if a larger quarantine can't be had. If you do, then I would just remove the live rock and store it separately. You'll lose the infaun in your sand, but it can be replaced more easily and cheaply than live rock.

rdefino, I would have to say that on the idea of using copper in a main display tank is the very last choice one would want to do. As mentioned, you would need to remove all your LR and if your LS, you would need to remove all of it and if not, remove the sand bed, leaving a thin dust only for if your a sand bed of some inches, the copper will remain in your tank for many months to come, after this treatment is completed.

So what you would need to do is buy a 32 gal Rubbermaid and have a air pump with a airstone and a pump so that you have a current going on. And if it is becoming cooler weather, you will then be needing a heater. After everything seems to be looking OK, you not will be replacing anything back in your tank for many weeks to come, even months. Also, don't buy a cheap copper test kit for it will not read what your copper level really is.

Buddy

QT tank

I have had 2 large FO tanks for many years. I don't disagree with the qt tank,but it is a pain! I have resorted to using cupramine in my main tanks.Then I remove it with poly filters. QT is good for 1 new fish. What about when your whole tank gets it! A few months ago my heater broke and the temp dropped 4 or 5 degrees. all the fish got velvet. I have large fish, I can't take every thing out or put all the fish in a different tank! People recommend QT tanks that are bare and don't have some sort of biological filtration, You have to do a water change everyday to keep those ammonia levels down. It is more stress on the fish! In defense of the QT,I have taken a gallon of charged bioballs from my system and made a small wetdry that worked good for qt tank or a back filter that is fully charged from your main tank.